IIAP Publications: Recent submissions

  • Li Distribution, Kinematics, and Detailed Abundance Analysis among Very Metal-poor Stars in the Galactic Halo from the HESP-GOMPA Survey 
    Bandyopadhyay, A; Sivarani, T; Beers, Timothy C; Susmitha, A; Nayak, Prasanta K; Pandey, Jeewan C (American Astronomical Society, 2022-10-01)
    We present a study on the detailed elemental abundances of newly identified, bright, very metal-poor stars with the detection of lithium, initially observed as part of the SDSS/MARVELS pre-survey. These stars were selected ...
  • Signatures of Light Massive Relics on non-linear structure formation 
    Banerjee, Arka; Das, Subinoy; Maharana, Anshuman; Sharma, R. K (Oxford University Press on behalf of Royal Astronomical Society, 2022-10)
    Cosmologies with Light Massive Relics (LiMRs) as a subdominant component of the dark sector are well-motivated from a particle physics perspective, and can also have implications for the σ8 tension between early and late ...
  • Excitation of vertical breathing motion in disc galaxies by tidally-induced spirals in fly-by interactions 
    Kumar, Ankit; Ghosh, Soumavo; Kataria, Sandeep Kumar; Mousumi Das; Debattista, Victor P (Oxford University Press on behalf of Royal Astronomical Society, 2022-10)
    It is now clear that the stars in the Solar neighbourhood display large-scale coherent vertical breathing motions. At the same time, Milky Way-like galaxies experience tidal interactions with satellites/companions during ...
  • Extending the sunspot area series from Kodaikanal Solar Observatory 
    Jha, Bibhuti K; Hegde, M; Priyadarshi, Aditya; Mandal, Sudip; Ravindra, B; Banerjee, D (Frontiers, 2022-10)
    Kodaikanal Solar Observatory (KoSO) possesses one of world's longest and homogeneous records of sunspot observations that span more than a century (1904–2017). Interestingly, these observations (originally recorded in ...
  • Shape of the outer stellar warp in the Large Magellanic Cloud disk 
    Saroon, S; Subramanian, S (EDP Sciences, 2022-10)
    Warps are vertical distortions of the stellar or gaseous disks of galaxies. One of the proposed scenarios for the formation of warps involves tidal interactions among galaxies. A recent study identified a stellar warp in ...
  • A faster growth of perturbations in an early matter dominated epoch: primordial black holes and gravitational waves 
    Das, Subinoy; Maharana, Anshuman; Muia, Francesco (Oxford University Press on behalf of Royal Astronomical Society, 2022-09)
    We present a scenario for fast growth of cosmological perturbations; δ(t) ∼ a(t)s, a(t) being the scale factor, with s > 10 for the numerical examples reported in this article. The basic ingredients of the scenario are an ...
  • Simultaneous X-ray/UV Observations of Ultraluminous X-ray Source Holmberg II X-1 with Indian Space Mission Astrosat 
    Vinokurov, A; Atapin, K; Bordoloi, O. P; Sarkisyan, A; Kashyap, U; Chakraborty, M; Rahna, P. T; Kostenkov, A; Solovyeva, Y; Fabrika, S; Safonova, M; Gogoi, R; Sutaria, F. K; Murthy, J (Springer, 2022-09)
    We present the results of eight epochs of simultaneous UV and X-ray observations of the highly variable ultraluminous X-ray source (ULX) Holmberg II X-1 with AstroSat—Indian multiwavelength space satellite. During the ...
  • Investigation of rocket effect in bright-rimmed clouds using Gaia EDR3 
    Saha, Piyali; Maheswar, G; Ojha, D. K; Baug, Tapas; Neha, Sharma (Oxford University Press on behalf of Royal Astronomical Society, 2022-09)
    Bright-rimmed clouds (BRCs) are excellent laboratories to explore the radiation-driven implosion mode of star formation because they show evidence of triggered star formation. In our previous study, BRC 18 has been found ...
  • Evolution of Hen 3-1357, the Stingray Nebula 
    Pena, Miriam; Parthasarathy, M; Ruiz-Escobedo, Francisco (Oxford University Press on behalf of Royal Astronomical Society, 2022-09)
    The spectroscopic evolution of Hen 3-1357, the Stingray Nebula, is presented by analysing data from 1990 to 2021. High-resolution data obtained in 2021 with South African Large Telescope High Resolution Spectrograph and ...
  • Optical observations and dust modelling of comet 156P/Russell-LINEAR 
    Aravind, K; Halder, Prithish; Ganesh, Shashikiran; Sahu, D. K; Serra-Ricart, Miquel; Chambo, Jose J; Angchuk, D; Sivarani, T (Elsevier B.V., 2022-09-01)
    Comet 156P/Russell-LINEAR is a short period Jupiter family comet with an orbital period of 6.44 years. The results from spectroscopic, photometric, polarimetric observations and dust modelling studies are presented here. ...
  • Investigation of the rotational lines of A–X and C–A band systems of aluminium deuteride molecule using sunspot umbral spectra 
    Shanmugapriya, G; Karthikeyan, B; Rajamanickam, N; Bagare, S. P (Springer, 2022-09)
    A high-resolution sunspot umbra spectrum recorded in National Solar Observatory, Kitt Peak, in the visible and infrared wave number range was used to search the rotational lines of A 1Π–X 1Σ+ (0,0), (0,0), (1,0), (1,1), ...
  • TANSPEC: TIFR-ARIES Near-infrared Spectrometer 
    Sharma, Saurabh; Ojha, Devendra. K; Ghosh, Arpan; Ninan, Joe. P; Ghosh, Supriyo; Ghosh, Swarna. K; Manoj, P; Naik, Milind. B; D'Costa, Savio, L. A; Reddy, B. Krishna; Nanjappa, Nandish; Pandey, Rakesh; Sinha, Tirthendu; Panwar, Neelam; Susmitha, A; Kaur, Harmeen; Sahu, Sanjit; Bangia, Tarun; Poojary, Satheesha S; Jadhav, Rajesh. B; Bhagat, Shailesh. B; Meshram, Ganesh. S; Shah, Harshit; Rayner, John. T; Toome, Douglas. W; Sandimani, Pradeep. R (IOP Publishing Ltd on behalf of the Astronomical Society of the Pacific, 2022-08)
    We present the design and performance of the TANSPEC, a medium-resolution 0.55–2.5 μm cryogenic spectrometer and imager, now in operation at the 3.6 m Devasthal Optical Telescope (DOT), Nainital, India. The TANSPEC provides ...
  • On the Bianchi identity in generalized theories of gravity 
    Kolekar, Sanved (Springer, 2022-08)
    We examine the generalised Bianchi identity, ∇a Eab = 0 where Eab is the equation of motion tensor of a general class of theories of gravity whose Lagrangian L(gab, Ra bcd ) depends arbitrarily on gab and Ra bcd but ...
  • The near ultraviolet transient surveyor (NUTS): An ultraviolet telescope to observe variable sources 
    Ambily, S; Sarpotda, Mayuresh; Mathew, Joice; Binukumar, G; Sreejith, A. G; Nirmal, K; Murthy, J; Safonova, M; Mohan, Rekhesh; Aggarval, Vinod Kumar; Nagabhushanam, S; Jeeragal, Sachin (Springer, 2022-08)
    Observing the ultraviolet (UV) sky for time-varyiable phenomena is one of the many exciting science goals that can be achieved by a relatively small aperture telescope in space. The Near Ultraviolet Transient Surveyor ...
  • The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package 
    The Astropy Collaboration; Price-Whelan, Adrian M; Lim, Pey Lian; Earl, Nicholas; Starkman, Nathaniel; Bradley, Larry; Shupe, David L; Patil, Aarya A; Corrales, Lia; Brasseur, C. E; Nothe, Maximilian; Singer, Leo P; Singhal, Jaladh; Sinha, Manodeep; Sipocz, Brigitta M; Spitler, Lee R; Stansby, David; Streicher, Ole; Sumak, Jani; Tollerud, Erik; Swinbank, John D; Paper Authors; Taranu, Dan S; Tewary, Nikita; Tremblay, Grant R; Val-Borro, Miguel de; Kooten, Samuel J. Van; Vasovic, Zlatan; Verm, Shresth; Cardoso, Jose Vinícius de Miranda; Williams, Peter K. G; Morris, Brett M; Aldcroft, Thomas L; Wilson, Tom J; Winkel, Benjamin; Wood-Vasey, W. M; Xue, Rui; Yoachim, Peter; Zhang, Chen; Zonca, Andrea; Astropy Project Contributors; Ginsburg, Adam; Vaher, Eero; Alvarado-Montes, Jaime A; Weaver, Benjamin A; Tocknell, James; Jamieson, William; Kerkwijk, Marten H. van; Robitaille, Thomas P.; Merry, Bruce; Bachetti, Matteo; Gunthe, H. Moritz; Archibald, Anne M; Bodi, Attila; Bapat, Shreyas; Barentsen, Geert; Bazan, Juanjo; Biswas, Manish; Boquien, Mederic; Handberg, Rasmus; Burke, D. J; Cara, Daria; Cara, Mihai; Conroy, Kyle E; Conseil, Simon; Craig, Matthew W; Cross, Robert M; Cruz, Kelle L; D'Eugenio, Francesco; Dencheva, Nadia; Hart, Akeem; Devillepoix, Hadrien A. R; Dietrich, Jorg P; Eigenbrot, Arthur Davis; Erben, Thomas; Ferreira, Leonardo; Foreman-Macke, Daniel; Fox, Ryan; Freij, Nabil; Garg, Suyog; Geda, Robel; Hatfield-Dodds, Zac; Glattly, Lauren; Gondhalekar, Yash; Gordon, Karl D; Grant, David; Greenfield, Perry; Groener, Austen M; Guest, Steve; Gurovich, Sebastian; Homeier, Derek; Hosseinzadeh, Griffin; Jenness, Tim; Jones, Craig K; Joseph, P; Kalmba, J. Bryce; Karamehmetoglu, Emir; Salgado, Jesus; Kałuszynski, Mikołaj; Kelley, Michael S. P; Kern, Nicholas; Kerzendor, Wolfgang E; Koch, Eric W; Kulumani, Shankar; Lee, Antony; Ly, Chun; M, Zhiyuan; MacBride, Conor; Sanghi, Aniket; Maljaars, Jakob M; Muna, Demitri; Murphy, N. A; Norman, Henrik; O'Steen, Richard; Oman, Kyle A; Pacifici, Camilla; Pascual, Sergio; Pascual-Granado, J; Patil, Rohit R; Saunders, Nicholas; Perren, Gabriel I; Pickering, Timothy E; Rastogi, Tanuj; Roulston, Benjamin R; Ryan, Daniel F; Rykoff, Eli S; Sabater, Jose; Sakurikar, Parikshit; Savchenko, Volodymyr; Schwardt, Ludwig; Seifert-Eckert, Michael; Shih, Albert Y; Jain, Anany Shrey; Shukla, Gyanendra; Sick, Jonathan; Donath, Axel; Simpson, Chris; Singanamalla, Sudheesh (American Astronomical Society, 2022-08-20)
    The Astropy Project supports and fosters the development of open-source and openly developed Python packages that provide commonly needed functionality to the astronomical community. A key element of the Astropy Project ...
  • SCALES on Keck: optical design 
    Kupke, Renate; Stelter, R. Deno; Hasan, Amirul; Surya, Arun; Kain, Isabel; Briesemeister, Zackery; Li, Jialin; Hinz, Phil; Skemer, Andrew; Gerard, Benjamin; Dillon, Daren; Ratliff, Christopher (SPIE-The International Society for Optical Engineering, 2022-08)
    SCALES is a high-contrast, infrared coronagraphic imager and integral field spectrograph (IFS) to be deployed behind the W.M. Keck Observatory adaptive optics system. A reflective optical design allows diffraction-limited ...
  • Design and development of WFOS, the Wide-Field Optical Spectrograph for the Thirty Meter Telescope 
    Steidel, Charles; Peng, Eric; Fucik, Jason; Nash, Reston; Kaye, Stephen; Jacoby, George; Delabre, Bernard; Ramya, S; Divakar, Devika; Varshney, Hari Mohan; Sivarani, T; Uraguchi, Fumihiro; Ozaki, Shinobu; Ji, Hangxin; Tao, L V; Chiu, Kent; Zhu, Qinfeng; Andersen, David; Miles, John; Lasi, Davide (SPIE-The International Society for Optical Engineering, 2022-08)
    We present the current design of WFOS, a wide-field UV/optical (0.31-1.0 µm) imaging spectrograph planned for first-light on the TMT International Observatory 30 m telescope. WFOS is optimized for high sensitivity across ...
  • Design of SCALES: a 2-5 micron coronagraphic integral field spectrograph for Keck Observatory 
    Skemer, Andrew J; Stelter, R. Deno; Sallum, Stephanie; MacDonald, Nicholas; Kupke, Renate; Ratliff, Christopher; Banyal, R. K; Hasan, Amirul; Varshney, Hari Mohan; Surya, Arun; Prakaesh, Ajin; Sivarani, T; Ramya, S; Govinda, K. V; Fitzgerald, Michael P; Wang, Eric; Kassis, Marc; Absil, Olivier; Alvarez, Carlos; Batalha, Natasha; Boucher, Marc-Andre; Bourgenot, Cyril; Brandt, Timothy; Briesemeister, Zackery; Kleer, Katherine de; Pater, Imke de; Deich, William; Divakar, Devika; Filion, Guillaume; Gauvin, Etienne; Gonzales, Michael; Greene, Thomas; Hinz, Philip; Jensen-Clem, Rebecca; Johnson, Christopher; Kain, Isabel; Kruglikov, Gabriel; Lach, Mackenzie; Landry, Jean-Thomas; Li, Jialin; Liu, Michael C; Lyke, James; Magnon, Kenneth; Marin, Eduardo; Martin, Emily; Martinez, Raquel; Mawet, Dimitri; Miles, Brittany; Sandford, Dale; Sheehan, Patrick; Sohn, Ji Man; Stone, Jordan (SPIE-The International Society for Optical Engineering, 2022-08)
    We present the design of SCALES (Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy) a new 2-5 micron coronagraphic integral field spectrograph under construction for Keck Observatory. SCALES enables ...
  • Innovations and advances in instrumentation at the W. M. Keck Observatory, vol. II 
    Kassis, Marc F; Allen, Steve; Alvarez, Carlos; Banyal, R. K; Bertz, Robert; Beichman, Charles; Brown, Aaron; Brown, Matthew; Cabak, Gerald; Bundy, Kevin; Cetre, Sylvain; Chin, Jason; Chun, Mark; Deich, Will; Dekany, Richard; Delorme, Jacques; Devenot, Mark; Doppmann, Greg; Fitzgerald, Michael P; Fucik, Jason R; Hill, Grant; Hinz, Philip; Holden, Bradford P; Howard, Andrew; Gao, Maodong; Gibson, Steve; Gomez, Percy; Gottschalk, Colby; Gillingham, Peter R; Jones, Tucker; Jovanovic, Nemanja; Kirby, Evan; Konopacky, Quinn; Krishnan, Shanti; Kupke, Renate; Larkin, James E.; Leife, Stephanie D; Lewis, Hilton A; Lilley, Scott; Lu, Jessica; Lyk, James E; MacDonald, Nick; Marin, Eduardo; Matuszewski, Matt; Mawet, Dimitri; McGurk, Rosalie; A Millar-Blanchaer, Maxwell; Nash, Reston B; Nance, Craig; Neill, James D; M. O'Meara, John; Peretz, Eliad; Poppett, Claire L; Mather, John C; Radovan, Matthew V; Roberts, Mitsuko K; Ragland, Sam; Rider, Kodi; Rockosi, Constance M; Sandfor, Dale; Shen, Boqiang; Steidel, Charles C; Simha, Sunil; Skemer, Andy; Stelter, Deno; Surendran, Avinash; Thorne, James; McCarney, Ben; Lanclos, Kyle; Baker, Ashley; Rubenzah, Ryan; Roy, Arpita; Halverson, Sam; Edelstein, Jerry; Martin, Christopher; Savage, Maureen; Sandford, Dale; Sallum, Stephanie; Walawender, Josh; Wizinowich, Peter; Westfall, Kyle B; Vahala, Kerry J; Wright, Shelley; Wold, Truman; Yeh, Sherry (SPIE-The International Society for Optical Engineering, 2022-08)
    Since the start of science operations in 1993, the twin 10-meter W. M. Keck Observatory (WMKO) telescopes have continued to maximize their scientific impact and to produce transformative discoveries that keep the observing ...
  • Study on segmentation and alignment related effects in a 10m class telescope 
    Jacob, A; Parihar, P. S; James, Melvin K; Dharmadhikari, Radhika (SPIE-The International Society for Optical Engineering, 2022-08)
    Indian astronomers are aiming to build a large 10m class optical-NIR telescope, equipped with state-of art instruments. After exploring many potential design options, we ended up with two mirror Ritchey-Chretien (RC) type ...

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